Development Control System Of Microgrid During Islanding Condition Using Fuzzy Logic
Keywords:
On-off GTI, microgrid, parallel inverter, fuzzy logicAbstract
In the microgrid each of micro generation (inverter) is connected in parallel with the network or with other micro generation. During on grid conditions, connection with network can be easily done because each generation refers to the parameters of the grid and it will generate energy as much as possible from the potential energy owned, if there is excess power, it will be supplied to the grid. But during off grid conditions, not all micro generation can be connected in parallel directly. Especially on micro generation that are not equipped with power sharing capability.
In this research the control system will be developed to improve the performance of the microgrid. The on-off grid tie inverter (on-off GTI) that cannot be connected in parallel with another inverter during islanding condition will be able to connect in parallel, so that the whole system can improve performance of microgrid. The control system was developed using fuzzy logic to reconfiguration PV circuit, which intended to regulate inter-inverter parallel mechanism by taking into account the amount of radiation and the power state of each inverter. The test results showed an increase in energy absorption from PV up to 26% and increased operation of the battery up to 26.38%.
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